Hello, thank you for your reply so does it mean my grade C from the old grading system can be equivalent to either a grade 4 or 5 coz back then they don't state on the certificate whether you got a high C low B or C...
from what i understand, a C is a standard pass, which is the equivalent of a 4. a C+ is a strong pass, which is equal to a 5.
there's not much in it though tbh, and there's quite a lot of confusion about the whole thing. i found a bbc news article that probably explains it better than i can lol